US9678048B2 - Method of evaluating final equilibrium pH of contaminated soil on site by using paste pH - Google Patents

Method of evaluating final equilibrium pH of contaminated soil on site by using paste pH Download PDF

Info

Publication number
US9678048B2
US9678048B2 US14/181,312 US201414181312A US9678048B2 US 9678048 B2 US9678048 B2 US 9678048B2 US 201414181312 A US201414181312 A US 201414181312A US 9678048 B2 US9678048 B2 US 9678048B2
Authority
US
United States
Prior art keywords
paste
equilibrium
mine
final
final equilibrium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active, expires
Application number
US14/181,312
Other versions
US20140288833A1 (en
Inventor
Pyeong-Koo Lee
Jung-Hae CHOI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Korea Institute of Geoscience and Mineral Resources KIGAM
Original Assignee
Korea Institute of Geoscience and Mineral Resources KIGAM
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Korea Institute of Geoscience and Mineral Resources KIGAM filed Critical Korea Institute of Geoscience and Mineral Resources KIGAM
Assigned to KOREA INSTITUTE OF GEOSCIENCE AND MINERAL RESOURCES reassignment KOREA INSTITUTE OF GEOSCIENCE AND MINERAL RESOURCES ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHOI, JUNG-HAE, LEE, PYEONG-KOO
Publication of US20140288833A1 publication Critical patent/US20140288833A1/en
Application granted granted Critical
Publication of US9678048B2 publication Critical patent/US9678048B2/en
Active legal-status Critical Current
Adjusted expiration legal-status Critical

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
    • G01N31/22—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators
    • G01N31/221—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators for investigating pH value
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/24—Earth materials

Definitions

  • the present invention relates to a method of evaluating a final equilibrium pH of a contaminated soil on site by using a paste pH.
  • the present invention a method of evaluating a final equilibrium pH of a contaminated soil on site by using a paste pH, capable of estimating the final equilibrium pH on site in real time by evaluating the pH of the contaminated soil around a wasted mine and an area to produce heavy metal.
  • Another object of the present invention is to exactly specify an artificial contamination source of a Pb isotope resulting from the industrial activity of a human being.
  • a method of evaluating a final equilibrium pH of a contaminated soil on site by using a paste pH includes measuring the paste pH by adding a solution to the contaminated soil, and evaluating the final equilibrium pH according to an initial pH by applying the paste pH to Equation 1,
  • the initial pH is a predetermined integer in a range of 1 to 10.
  • the final equilibrium pH can be evaluated on site in real time by using the pH of the contaminated soil, so that the contaminated soil can be analyzed in real time and the contamination degree can be estimated.
  • the time and the experimental cost can be reduced. Accordingly, the soil analysis can be effectively performed on site.
  • FIG. 1 is a flowchart showing a method of evaluating a final equilibrium pH of a contaminated soil on site by using a paste pH according to the present invention.
  • FIG. 2 is a graph showing the final equilibrium pH of the first to nineteenth embodiments measured in the method of evaluating the final equilibrium pH of the contaminated soil on site by using the paste pH and the result of the final equilibrium pH measured in a laboratory according to each embodiment.
  • the present invention provides a method of evaluating a final equilibrium pH of a contaminated soil on site by using a paste pH including measuring a paste pH by adding a solution to the contaminated soil, and evaluating the final equilibrium pH according to an initial pH by applying the measured paste pH to following Equation 1.
  • Equation 1 the initial pH is a predetermined integer in the range of 1 to 10.
  • the final equilibrium pH can be evaluated on site in real time by using the pH of the contaminated soil, so that the contaminated soil can be analyzed in real time and the contamination degree can be estimated.
  • FIG. 1 is a flowchart showing the method of evaluating the final equilibrium pH of the contaminated soil on site by using the paste pH according to an exemplary embodiment of the present invention.
  • the present invention will be described in detail with reference to FIG. 1 .
  • the method of evaluating the final equilibrium pH of the contaminated soil on site by using the paste pH according to the present invention includes measuring a paste pH by adding a solution to the contaminated soil (step S 10 ).
  • the contaminated soil may include mineral tailings, or waste rocks, or both of the mineral tailings and the waste rocks.
  • distilled water or water is added to the contaminated soil to make the contaminated soil in a paste state, the paste pH is measured.
  • the method of evaluating the final equilibrium pH of the contaminated soil on site by using the paste pH according to the present invention includes evaluating the final equilibrium pH according to an initial pH in the range of 1 to 10 by applying the measured paste pH to following Equation 1 (step S 20 ).
  • the initial pH is a predetermined integer in the range of 1 to 10.
  • the initial pH may be the pH of raindrop, underground water, or ore industry sewage.
  • the final equilibrium pH of the contaminated soil on site by using the paste pH of the present invention after measuring the paste pH of the contaminated soil around the waste mine and the area to produce heavy metal, the final equilibrium pH can be evaluated on site in real time without analyzing the final equilibrium pH in a laboratory according to the pH of surrounding raindrop, underground water, or ore industry sewage, so that time and cost can be saved.
  • Korean representative mines such as Sangdong mine, Yeonhwa mine, Janggun mine, Samkwang mine, Deokchon mine, Sannae mine, Yeosu mine, Dokseong mine, Yaro mine, Taechang mine, Backwol mine, Gumgae mine, Munmyeong mine, Shinlim mine, Gakhee mine, Daeyang mine, Ilwall mine, and Jangja mine
  • Samkwang mine which is one of representative mines, will be described as an example in detail.
  • Samkwang mine is located in Sindaeri, Ungokmyeon, Cheongyanggun, Chungcheongnamdo, Korea.
  • Samkwang mine is the biggest mine among domestic metal mines.
  • gold and silver have been developed from Japanese occupation, and abandoned in 2001. Since 11 million tons of mineral tailings and several thousand tons of waste rocks are deposited, contamination is spread downward of the mine along a water system.
  • the high content of arsenic (As) is contained in the mineral tailings and the soil around the mine.
  • Arsenic (As), which exceeds 15 to 25 times higher than a standard value thereof, lead (Pb), which exceeds two times higher than a standard value thereof, and cadmium (Cd) exceeding a standard value thereof, are detected in a soil around a yard of the mineral tailings.
  • Arsenic (As), which exceeds 20 times higher than the standard value thereof, is detected in a rice paddy or a dry field in the contact with the yard of the mineral tailings.
  • the main cause of the high concentration of Arsenic (As) is determined as mineral tailings, and Arsenic (As) is significantly spread into a surrounding area.
  • 50 ml of distilled water was put into the paper cup and neglected. If necessity, a slight amount of distilled water was additionally added into the paper cup to make the soil in a paste state and the pH of the soil in the paste state was measured. In this case, the paste pH was 8.9.
  • the initial pH was set to 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10, and the final equilibrium pH was evaluated by applying the initial pH to Equation 1.
  • the final equilibrium pH according to each initial pH in the range of 1 to 10 was shown in following table 1.
  • the second embodiment is applied to Equation 1 in the same manner as that of the first embodiment except for a soil collected from Yeonhwa mine located in Samcheok-si, Kangwon-do, Korea to evaluate the final equilibrium pH.
  • the paste pH was 7.8.
  • the third embodiment is applied to Equation 1 in the same manner as that of the first embodiment except for a soil collected from Janggun mine located in Bonghwa-gun, Kyeonsangbuk-do, Korea to evaluate the final equilibrium pH.
  • the paste pH was 7.1.
  • the fourth embodiment is applied to Equation 1 in the same manner as that of the first embodiment except for a soil collected from Janggum mine located in Bonghwa-gun, Kyeonsangbuk-do, Korea to evaluate the final equilibrium pH.
  • the paste pH was 7.8.
  • the fifth embodiment is applied to Equation 1 in the same manner as that of the first embodiment except for a soil collected from Sankwang mine located in Cheongyang-gun, Chungcheongnam-do, Korea to evaluate the final equilibrium pH.
  • the paste pH was 9.1.
  • the sixth embodiment is applied to Equation 1 in the same manner as that of the first embodiment except for a soil collected from Deokchon mine located in Hapcheon-gun, Kyeongsangnam-do, Korea to evaluate the final equilibrium pH.
  • the paste pH was 7.8.
  • the seventh embodiment is applied to Equation 1 in the same manner as that of the first embodiment except for a soil collected from Sannae mine located in Milyang-gun, Kyeongsangnam-do, Korea to evaluate the final equilibrium pH.
  • the paste pH was 7.8.
  • the eighth embodiment is applied to Equation 1 in the same manner as that of the first embodiment except for a soil collected from Yeosu mine located in Yeoju-gun, Kyeonggi-do, Korea to evaluate the final equilibrium pH.
  • the paste pH was 6.1.
  • the ninth embodiment is applied to Equation 1 in the same manner as that of the first embodiment except for a soil collected from Dokseong mine located in Yongin-si, Kyeonggi-do, Korea to evaluate the final equilibrium pH.
  • the paste pH was 5.9.
  • the tenth embodiment is applied to Equation 1 in the same manner as that of the first embodiment except for a soil collected from Yaro mine located in Hapcheon-gun, Kyeongsangnam-do, Korea to evaluate the final equilibrium pH.
  • the paste pH was 5.7.
  • the eleventh embodiment is applied to Equation 1 in the same manner as that of the first embodiment except for a soil collected from Teachang mine located in Chungju-si, Chungcheonbuk-do, Korea to evaluate the final equilibrium pH.
  • the paste pH was 4.7.
  • the twelfth embodiment is applied to Equation 1 in the same manner as that of the first embodiment except for a soil collected from Backwol mine located in Changwon-si, Kyeongsangnam-do, Korea to evaluate the final equilibrium pH.
  • the paste pH was 4.3.
  • the thirteenth embodiment is applied to Equation 1 in the same manner as that of the first embodiment except for a soil collected from Gumgae mine located in Yanpyeong-gun, Kyeonggi-do, Korea to evaluate the final equilibrium pH.
  • the paste pH was 3.9.
  • the fourteenth embodiment is applied to Equation 1 in the same manner as that of the first embodiment except for a soil collected from Munmyeong mine located in Yeongduk-gun, Kyeongsangbuk-do, Korea to evaluate the final equilibrium pH.
  • the paste pH was 3.4.
  • the fifteenth embodiment is applied to Equation 1 in the same manner as that of the first embodiment except for a soil collected from Shinlim mine located in Wonju-si, Kangwon-do, Korea to evaluate the final equilibrium pH.
  • the paste pH was 3.3.
  • the sixteenth embodiment is applied to Equation 1 in the same manner as that of the first embodiment except for a soil collected from Gakhee mine located in Bonghwa-gun, Kyeongsangbuk-do, Korea to evaluate the final equilibrium pH.
  • the paste pH was 3.2.
  • the seventeenth embodiment is applied to Equation 1 in the same manner as that of the first embodiment except for a soil collected from Daeyang mine located in Jecheon-si, Chungcheongbuk-do, Korea to evaluate the final equilibrium pH.
  • the paste pH was 3.0.
  • the eighteenth embodiment is applied to Equation 1 in the same manner as that of the first embodiment except for a soil collected from Ilwall mine located in Yeongyang-gun, Kyeongsangbuk-do, Korea to evaluate the final equilibrium pH.
  • the paste pH was 2.6.
  • the nineteenth embodiment is applied to Equation 1 in the same manner as that of the first embodiment except for a soil collected from Jangja mine located in Cheongsong-gun, Kyeongsangbuk-do, Korea to evaluate the final equilibrium pH.
  • the paste pH was 2.1.
  • Equation 1 shows the final equilibrium pH calculated through Equation 1 with respect to mines according to the first to nineteenth embodiments, from which a soil is collected, the paste pH, and each initial pH.
  • Table 2 shows the analysis of the metal component and the specific gravity of a contaminated soil collected from mines to be investigated according to the first to nineteenth embodiments.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Molecular Biology (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Remote Sensing (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Biophysics (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

Disclosed is a method of evaluating a final equilibrium pH of a contaminated soil on site by using a paste pH. The method includes measuring the paste pH by adding a solution to the contaminated soil, and evaluating the final equilibrium pH according to an initial pH by applying the paste pH to
Final ⁢ ⁢ equilibrium ⁢ ⁢ pH = ( paste ⁢ ⁢ pH + 1 ) × exp ⁡ ( - 1 initial ⁢ ⁢ pH ) - exp ⁡ ( - 1 ⁢ ( paste ⁢ ⁢ pH + 1 ) initital ⁢ ⁢ pH ) , Equation ⁢ ⁢ 1
in which the initial pH is a predetermined integer in a range of 1 to 10.

Description

CROSS-REFERENCE TO RELATED APPLICATION
This application claims priority to Korean Patent Application No. 10-2013-0031318 filed on Mar. 25, 2013, and all the benefits accruing therefrom under 35 U.S.C. §119, the contents of which is incorporated by reference in its entirety.
BACKGROUND OF THE INVENTION
1) Field of the Invention
The present invention relates to a method of evaluating a final equilibrium pH of a contaminated soil on site by using a paste pH.
2) Background of Related Art
In Korea, thousands of abandoned metal mines are scattered and mineral tailings and waste rocks discharged from the abandoned metal mines are neglected in many areas of the abandoned metal mines. Acid drainage and dissolved metal are discharged from the mineral tailings and the waste rocks to surroundings, thereby cause severe damage to the surrounding ecosystem of the abandoned mines and the health of a human being. Accordingly, the priority for rapid and effective contamination evaluation processes of the mineral tailings or the waste rocks discharged from the abandoned mines must be immediately determined.
In order to evaluate the contamination degree of a soil contaminated with mineral tailings or the waste rocks, the collection of the representative sample of the mineral tailings or the waste rocks piled up in the abandoned metal mine is important. In other words, standards must be established with respect to a scheme of reasonably and systematically collecting samples according to the characteristics (deposits type, mineral type, ground, or the like) of the mineral tailings or the waste rocks and to the number of samples.
Most domestic abandoned mines are distributed in mountainous territories difficult to access thereto, so that samples may not be easily investigated, collected, and moved. Accordingly, much time is spent to collect samples of the mineral tailings discharged from many abandoned metal mines distributed all over the country. In addition, as the number of collected mineral tailings is increased, the information of representative heavy metal of the mineral tailings exerting an influence on contamination may be more acquired. However, when an excess amount of samples are analyzed, much time and cost are required. Accordingly, a method of economically and rapidly evaluating a soil contaminated by the abandoned metal mine is required.
As a related art of the present invention, there is Korea Patent Registration No. 10-0571601 titled “BIOLOGICAL METHOD FOR CUT OFFING AND PURIFYING CONTAMINATED SOIL” (issued on Apr. 1, 2006).
SUMMARY OF THE INVENTION
The present invention a method of evaluating a final equilibrium pH of a contaminated soil on site by using a paste pH, capable of estimating the final equilibrium pH on site in real time by evaluating the pH of the contaminated soil around a wasted mine and an area to produce heavy metal.
Another object of the present invention is to exactly specify an artificial contamination source of a Pb isotope resulting from the industrial activity of a human being.
In order to accomplish the above object, there is provided a method of evaluating a final equilibrium pH of a contaminated soil on site by using a paste pH. The method includes measuring the paste pH by adding a solution to the contaminated soil, and evaluating the final equilibrium pH according to an initial pH by applying the paste pH to Equation 1,
Final ⁢ ⁢ equilibrium ⁢ ⁢ pH = ( paste ⁢ ⁢ pH + 1 ) × exp ⁡ ( - 1 initial ⁢ ⁢ pH ) - exp ⁡ ( - 1 ⁢ ( paste ⁢ ⁢ pH + 1 ) initital ⁢ ⁢ pH ) , Equation ⁢ ⁢ 1
in which the initial pH is a predetermined integer in a range of 1 to 10.
As described above, according to the present invention, the final equilibrium pH can be evaluated on site in real time by using the pH of the contaminated soil, so that the contaminated soil can be analyzed in real time and the contamination degree can be estimated. In addition, since the final equilibrium pH of the contaminated soil can be found in real time, the time and the experimental cost can be reduced. Accordingly, the soil analysis can be effectively performed on site.
BRIEF DESCRIPTION OF DRAWINGS
FIG. 1 is a flowchart showing a method of evaluating a final equilibrium pH of a contaminated soil on site by using a paste pH according to the present invention.
FIG. 2 is a graph showing the final equilibrium pH of the first to nineteenth embodiments measured in the method of evaluating the final equilibrium pH of the contaminated soil on site by using the paste pH and the result of the final equilibrium pH measured in a laboratory according to each embodiment.
 DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to accompanying drawings.
The advantages, the features, and schemes of achieving the advantages and features of the present invention will be apparently comprehended by those skilled in the art based on the embodiments, which are detailed later in detail, together with accompanying drawings.
The present invention is not limited to the following embodiments but includes various applications and modifications. The embodiments will make the disclosure of the present invention complete, and allow those skilled in the art to completely comprehend the scope of the present invention. The present invention is only defined within the scope of accompanying claims
In addition, the detailed descriptions of well-known techniques incorporated herein may be omitted when they make the subject matter rather unclear.
The present invention provides a method of evaluating a final equilibrium pH of a contaminated soil on site by using a paste pH including measuring a paste pH by adding a solution to the contaminated soil, and evaluating the final equilibrium pH according to an initial pH by applying the measured paste pH to following Equation 1.
Final ⁢ ⁢ equilibrium ⁢ ⁢ pH = ( paste ⁢ ⁢ pH + 1 ) × exp ⁡ ( - 1 initial ⁢ ⁢ pH ) - exp ⁡ ( - 1 ⁢ ( paste ⁢ ⁢ pH + 1 ) initital ⁢ ⁢ pH ) Equation ⁢ ⁢ 1
In Equation 1, the initial pH is a predetermined integer in the range of 1 to 10.
According to the method of evaluating the final equilibrium pH of the contaminated soil on site by using the paste pH of the present invention, the final equilibrium pH can be evaluated on site in real time by using the pH of the contaminated soil, so that the contaminated soil can be analyzed in real time and the contamination degree can be estimated.
In addition, since the final equilibrium pH of the contaminated soil can be found in real time, the time and the experimental cost can be reduced. Accordingly, the soil analysis can be effectively performed on site.
FIG. 1 is a flowchart showing the method of evaluating the final equilibrium pH of the contaminated soil on site by using the paste pH according to an exemplary embodiment of the present invention. Hereinafter, the present invention will be described in detail with reference to FIG. 1.
The method of evaluating the final equilibrium pH of the contaminated soil on site by using the paste pH according to the present invention includes measuring a paste pH by adding a solution to the contaminated soil (step S10).
The contaminated soil may include mineral tailings, or waste rocks, or both of the mineral tailings and the waste rocks. After the solution, in detail, distilled water or water is added to the contaminated soil to make the contaminated soil in a paste state, the paste pH is measured.
The method of evaluating the final equilibrium pH of the contaminated soil on site by using the paste pH according to the present invention includes evaluating the final equilibrium pH according to an initial pH in the range of 1 to 10 by applying the measured paste pH to following Equation 1 (step S20).
Final ⁢ ⁢ equilibrium ⁢ ⁢ pH = ( paste ⁢ ⁢ pH + 1 ) × exp ⁡ ( - 1 initial ⁢ ⁢ pH ) - exp ⁡ ( - 1 ⁢ ( paste ⁢ ⁢ pH + 1 ) initital ⁢ ⁢ pH ) Equation ⁢ ⁢ 1
In Equation 1, the initial pH is a predetermined integer in the range of 1 to 10. In detail, the initial pH may be the pH of raindrop, underground water, or ore industry sewage.
Therefore, according to the method of evaluating the final equilibrium pH of the contaminated soil on site by using the paste pH of the present invention, after measuring the paste pH of the contaminated soil around the waste mine and the area to produce heavy metal, the final equilibrium pH can be evaluated on site in real time without analyzing the final equilibrium pH in a laboratory according to the pH of surrounding raindrop, underground water, or ore industry sewage, so that time and cost can be saved.
In order to ensure the reliability of the method of evaluating the final equilibrium pH of the contaminated soil on site by using the paste pH according to the present invention, following embodiments are provided regarding Korean representative mines such as Sangdong mine, Yeonhwa mine, Janggun mine, Samkwang mine, Deokchon mine, Sannae mine, Yeosu mine, Dokseong mine, Yaro mine, Taechang mine, Backwol mine, Gumgae mine, Munmyeong mine, Shinlim mine, Gakhee mine, Daeyang mine, Ilwall mine, and Jangja mine
Hereinafter, Samkwang mine, which is one of representative mines, will be described as an example in detail. Samkwang mine is located in Sindaeri, Ungokmyeon, Cheongyanggun, Chungcheongnamdo, Korea. Samkwang mine is the biggest mine among domestic metal mines. In Samwang mine, gold and silver have been developed from Japanese occupation, and abandoned in 2001. Since 11 million tons of mineral tailings and several thousand tons of waste rocks are deposited, contamination is spread downward of the mine along a water system. Particularly, in Samkwang mine, the high content of arsenic (As) is contained in the mineral tailings and the soil around the mine. Arsenic (As), which exceeds 15 to 25 times higher than a standard value thereof, lead (Pb), which exceeds two times higher than a standard value thereof, and cadmium (Cd) exceeding a standard value thereof, are detected in a soil around a yard of the mineral tailings. Arsenic (As), which exceeds 20 times higher than the standard value thereof, is detected in a rice paddy or a dry field in the contact with the yard of the mineral tailings. In Samkwang mine, the main cause of the high concentration of Arsenic (As) is determined as mineral tailings, and Arsenic (As) is significantly spread into a surrounding area.
Embodiment 1: On-Site Evaluation of Final Equilibrium pH from Soil Collected from Sandong Mine
A soil collected from Sangdong mine located in Yeongwol-gun, Kangwan-do, Korea was sieved in 60 meshes, and 10 g of the sieved soil was put into a paper cup. In addition, 50 ml of distilled water was put into the paper cup and neglected. If necessity, a slight amount of distilled water was additionally added into the paper cup to make the soil in a paste state and the pH of the soil in the paste state was measured. In this case, the paste pH was 8.9. The initial pH was set to 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10, and the final equilibrium pH was evaluated by applying the initial pH to Equation 1. The final equilibrium pH according to each initial pH in the range of 1 to 10 was shown in following table 1.
Embodiment 2: On-Site Evaluation of Final Equilibrium pH from Soil Collected from Yeonhwa Mine
The second embodiment is applied to Equation 1 in the same manner as that of the first embodiment except for a soil collected from Yeonhwa mine located in Samcheok-si, Kangwon-do, Korea to evaluate the final equilibrium pH. In this case, the paste pH was 7.8.
Embodiment 3: On-Site Evaluation of Final Equilibrium pH from Soil Collected from Janggun Mine
The third embodiment is applied to Equation 1 in the same manner as that of the first embodiment except for a soil collected from Janggun mine located in Bonghwa-gun, Kyeonsangbuk-do, Korea to evaluate the final equilibrium pH. In this case, the paste pH was 7.1.
Embodiment 4: Second On-Site Evaluation of Final Equilibrium pH from Soil Collected from Janggun Mine
The fourth embodiment is applied to Equation 1 in the same manner as that of the first embodiment except for a soil collected from Janggum mine located in Bonghwa-gun, Kyeonsangbuk-do, Korea to evaluate the final equilibrium pH. In this case, the paste pH was 7.8.
Embodiment 5: On-Site Evaluation of Final Equilibrium pH from Soil Collected from Samkwang Mine
The fifth embodiment is applied to Equation 1 in the same manner as that of the first embodiment except for a soil collected from Sankwang mine located in Cheongyang-gun, Chungcheongnam-do, Korea to evaluate the final equilibrium pH. In this case, the paste pH was 9.1.
Embodiment 6: On-Site Evaluation of Final Equilibrium pH from Soil Collected from Deokchon Mine
The sixth embodiment is applied to Equation 1 in the same manner as that of the first embodiment except for a soil collected from Deokchon mine located in Hapcheon-gun, Kyeongsangnam-do, Korea to evaluate the final equilibrium pH. In this case, the paste pH was 7.8.
Embodiment 7: On-Site Evaluation of Final Equilibrium pH from Soil Collected from Sannae Mine
The seventh embodiment is applied to Equation 1 in the same manner as that of the first embodiment except for a soil collected from Sannae mine located in Milyang-gun, Kyeongsangnam-do, Korea to evaluate the final equilibrium pH. In this case, the paste pH was 7.8.
Embodiment 8: On-Site Evaluation of Final Equilibrium pH from Soil Collected from Yeosu Mine
The eighth embodiment is applied to Equation 1 in the same manner as that of the first embodiment except for a soil collected from Yeosu mine located in Yeoju-gun, Kyeonggi-do, Korea to evaluate the final equilibrium pH. In this case, the paste pH was 6.1.
Embodiment 9: On-Site Evaluation of Final Equilibrium pH from Soil Collected from Dokseong Mine
The ninth embodiment is applied to Equation 1 in the same manner as that of the first embodiment except for a soil collected from Dokseong mine located in Yongin-si, Kyeonggi-do, Korea to evaluate the final equilibrium pH. In this case, the paste pH was 5.9.
Embodiment 10: On-Site Evaluation of Final Equilibrium pH from Soil Collected from Yaro Mine
The tenth embodiment is applied to Equation 1 in the same manner as that of the first embodiment except for a soil collected from Yaro mine located in Hapcheon-gun, Kyeongsangnam-do, Korea to evaluate the final equilibrium pH. In this case, the paste pH was 5.7.
Embodiment 11: On-Site Evaluation of Final Equilibrium pH from Soil Collected from Teachang Mine
The eleventh embodiment is applied to Equation 1 in the same manner as that of the first embodiment except for a soil collected from Teachang mine located in Chungju-si, Chungcheonbuk-do, Korea to evaluate the final equilibrium pH. In this case, the paste pH was 4.7.
Embodiment 12: On-Site Evaluation of Final Equilibrium pH from Soil Collected from Backwol Mine
The twelfth embodiment is applied to Equation 1 in the same manner as that of the first embodiment except for a soil collected from Backwol mine located in Changwon-si, Kyeongsangnam-do, Korea to evaluate the final equilibrium pH. In this case, the paste pH was 4.3.
Embodiment 13: On-Site Evaluation of Final Equilibrium pH from Soil Collected from Gumgae Mine
The thirteenth embodiment is applied to Equation 1 in the same manner as that of the first embodiment except for a soil collected from Gumgae mine located in Yanpyeong-gun, Kyeonggi-do, Korea to evaluate the final equilibrium pH. In this case, the paste pH was 3.9.
Embodiment 14: On-Site Evaluation of Final Equilibrium pH from Soil Collected from Munmyeong Mine
The fourteenth embodiment is applied to Equation 1 in the same manner as that of the first embodiment except for a soil collected from Munmyeong mine located in Yeongduk-gun, Kyeongsangbuk-do, Korea to evaluate the final equilibrium pH. In this case, the paste pH was 3.4.
Embodiment 15: On-Site Evaluation of Final Equilibrium pH from Soil Collected from Shinlim Mine
The fifteenth embodiment is applied to Equation 1 in the same manner as that of the first embodiment except for a soil collected from Shinlim mine located in Wonju-si, Kangwon-do, Korea to evaluate the final equilibrium pH. In this case, the paste pH was 3.3.
Embodiment 16: On-Site Evaluation of Final Equilibrium pH from Soil Collected from Gakhee Mine
The sixteenth embodiment is applied to Equation 1 in the same manner as that of the first embodiment except for a soil collected from Gakhee mine located in Bonghwa-gun, Kyeongsangbuk-do, Korea to evaluate the final equilibrium pH. In this case, the paste pH was 3.2.
Embodiment 17: On-Site Evaluation of Final Equilibrium pH from Soil Collected from Daeyang Mine
The seventeenth embodiment is applied to Equation 1 in the same manner as that of the first embodiment except for a soil collected from Daeyang mine located in Jecheon-si, Chungcheongbuk-do, Korea to evaluate the final equilibrium pH. In this case, the paste pH was 3.0.
Embodiment 18: On-Site Evaluation of Final Equilibrium pH from Soil Collected from Ilwall Mine
The eighteenth embodiment is applied to Equation 1 in the same manner as that of the first embodiment except for a soil collected from Ilwall mine located in Yeongyang-gun, Kyeongsangbuk-do, Korea to evaluate the final equilibrium pH. In this case, the paste pH was 2.6.
Embodiment 19: On-Site Evaluation of Final Equilibrium pH from Soil Collected from Jangja Mine
The nineteenth embodiment is applied to Equation 1 in the same manner as that of the first embodiment except for a soil collected from Jangja mine located in Cheongsong-gun, Kyeongsangbuk-do, Korea to evaluate the final equilibrium pH. In this case, the paste pH was 2.1.
Following table 1 shows the final equilibrium pH calculated through Equation 1 with respect to mines according to the first to nineteenth embodiments, from which a soil is collected, the paste pH, and each initial pH.
TABLE 1
Paste Initial pH
Example Mine name pH 1 2 3 4 5 6 7 8 9 10
Embodiment 1 Sangdong 8.9 3.6 6.0 7.1 7.6 8.0 8.2 8.3 8.4 8.5 8.6
Embodiment 2 Yeonhwa 7.8 3.2 5.3 6.3 6.7 7.0 7.2 7.3 7.4 7.5 7.5
Embodiment 3 Janggun 7.1 3.0 4.9 5.7 6.2 6.4 6.6 6.7 6.8 6.8 6.9
Embodiment 4 Janggun 7.8 3.2 5.3 6.3 6.7 7.0 7.2 7.3 7.4 7.5 7.5
Embodiment 5 Samkwang 9.1 3.7 6.1 7.2 7.8 8.1 8.4 8.5 8.6 8.7 8.8
Embodiment 6 Deokchon 7.8 3.2 5.3 6.3 6.7 7.0 7.2 7.3 7.4 7.5 7.5
Embodiment 7 Sannae 7.8 3.2 5.3 6.3 6.7 7.0 7.2 7.3 7.4 7.5 7.5
Embodiment 8 Yeosu 6.1 2.6 4.3 5.0 5.4 5.6 5.7 5.8 5.9 5.9 5.9
Embodiment 9 Dokseong 5.9 2.5 4.2 4.8 5.2 5.4 5.5 5.6 5.7 5.7 5.7
Embodiment 10 Yaro 5.7 2.5 4.0 4.7 5.0 5.2 5.3 5.4 5.5 5.5 5.6
Embodiment 11 Taechang 4.7 2.1 3.4 3.9 4.2 4.3 4.4 4.5 4.5 4.6 4.6
Embodiment 12 Backwol 4.3 1.9 3.1 3.6 3.9 4.0 4.1 4.1 4.2 4.2 4.2
Embodiment 13 Gumgae 3.9 1.8 2.9 3.3 3.5 3.6 3.7 3.8 3.8 3.8 3.8
Embodiment 14 Munmyeong 3.4 1.6 2.6 2.9 3.1 3.2 3.2 3.3 3.3 3.3 3.3
Embodiment 15 Shinlim 3.3 1.6 2.5 2.8 3.0 3.1 3.2 3.2 3.2 3.2 3.2
Embodiment 16 Gakhee 3.2 1.5 2.4 2.8 2.9 3.0 3.1 3.1 3.1 3.1 3.1
Embodiment 17 Daeyang 3.0 1.5 2.3 2.6 2.7 2.8 2.9 2.9 2.9 2.9 2.9
Embodiment 18 Ilwall 2.6 1.3 2.0 2.3 2.4 2.5 2.5 2.5 2.5 2.6 2.6
Embodiment 19 Jangja 2.1 1.1 1.7 1.9 2.0 2.0 2.0 2.0 2.1 2.1 2.1
Table 2 shows the analysis of the metal component and the specific gravity of a contaminated soil collected from mines to be investigated according to the first to nineteenth embodiments.
TABLE 2
Specific
Embodiment Metal component gravity
Embodiment 1 W 2.91
Embodiment 2 Pb, Zn 3.42
Embodiment 3 Cu, Pb, Zn, Mn 3.42
Embodiment 4 Cu, Pb, Zn, Mn 3.59
Embodiment 5 Au, Ag, Pb, Zn 2.69
Embodiment 6 Au, Ag 2.85
Embodiment 7 W, Mo 2.81
Embodiment 8 Au, Ag 2.65
Embodiment 9 Au 2.67
Embodiment 10 Au, Ag, Pb, Zn 3.00
Embodiment 11 Au, Ag 2.68
Embodiment 12 Zn 2.78
Embodiment 13 Au, Ag, Cu, Pb, Zn 2.67
Embodiment 14 Au, Ag 2.76
Embodiment 15 Ag 2.85
Embodiment 16 Au, Ag, Pb 2.61
Embodiment 17 W 3.65
Embodiment 18 Au, Ag, Cu 3.33
Embodiment 19 Ag, Zn, Cu, Pb 2.85
Experimental Example 1: Analysis of Final Equilibrium pH Measured on Site and Final Equilibrium pH Evaluated in Laboratory
The results of the final equilibrium pH evaluated through Equation 1 according to the first to nineteenth embodiments in the method of evaluating the final equilibrium pH of the contaminated soil on site by using the paste pH according to the present invention, and the results of the final equilibrium pH measured in a laboratory according to each embodiment are shown in table 3 and FIG. 2.
TABLE 3
Initial pH
1 2 3 4 5 6 7 8 9 10
Calculated 3.6 6.0 7.1 7.6 8.0 8.2 8.3 8.4 8.5 8.6
value of
Embodiment 1
Measured final 3.8 — 8.0 8.2 7.6 7.8 7.7 7.9 7.7 7.9
equilibrium pH
Calculated 3.2 5.3 6.3 6.7 7.0 7.2 7.3 7.4 7.5 7.5
value of
Embodiment 2
Measured final 1.1 2.3 7.7 7.6 7.7 7.8 7.7 7.7 7.9 7.7
equilibrium pH
Calculated 3.0 4.9 5.7 6.2 6.4 6.6 6.7 6.8 6.8 6.9
value of
Embodiment 3
Measured final 1.9 6.9 7.2 7.6 7.6 7.8 7.8 7.8 7.4 6.3
equilibrium pH
Calculated 3.2 5.3 6.3 6.7 7.0 7.2 7.3 7.4 7.5 7.5
value of
Embodiment 4
Measured final 3.8 7.1 7.6 7.9 7.5 8.0 7.9 8.0 7.0 7.8
equilibrium pH
Calculated 3.7 6.1 7.2 7.8 8.1 8.4 8.5 8.6 8.7 8.8
value of
Embodiment 5
Measured final 5.3 7.8 9.1 9.5 8.2 8.2 8.2 8.2 8.3 8.6
equilibrium pH
Calculated 3.2 5.3 6.3 6.7 7.0 7.2 7.3 7.4 7.5 7.5
value of
Embodiment 6
Measured final 1.0 5.9 7.5 7.8 7.9 7.9 8.0 7.6 7.8 7.9
equilibrium pH
Calculated 3.2 5.3 6.3 6.7 7.0 7.2 7.3 7.4 7.5 7.5
value of
Embodiment 7
Measured final 1.3 7.1 7.6 7.5 7.5 7.5 7.5 7.4 8.0 8.1
equilibrium pH
Calculated 2.6 4.3 5.0 5.4 5.6 5.7 5.8 5.9 5.9 5.9
value of
Embodiment 8
Measured final 1.1 — 4.5 6.0 6.4 6.6 7.1 7.1 7.1 7.4
equilibrium pH
Calculated 2.5 4.2 4.8 5.2 5.4 5.5 5.6 5.7 5.7 5.7
value of
Embodiment 9
Measured final 1.1 2.3 4.0 5.3 5.4 5.4 5.6 6.1 6.0 6.8
equilibrium pH
Calculated 2.5 4.0 4.7 5.0 5.2 5.3 5.4 5.5 5.5 5.6
value of
Embodiment 10
Measured final 1.2 5.4 6.3 6.3 6.3 6.3 6.4 6.3 6.9 6.9
equilibrium pH
Calculated 2.1 3.4 3.9 4.2 4.3 4.4 4.5 4.5 4.6 4.6
value of
Embodiment 11
Measured final 1.3 2.7 4.2 4.8 4.8 4.9 4.9 5.1 5.1 5.6
equilibrium pH
Calculated 1.9 3.1 3.6 3.9 4.0 4.1 4.1 4.2 4.2 4.2
value of
Embodiment 12
Measured final 1.0 2.8 3.9 3.9 4.3 4.3 4.1 4.3 3.9 4.3
equilibrium pH
Calculated 1.8 2.9 3.3 3.5 3.6 3.7 3.8 3.8 3.8 3.8
value of
Embodiment 13
Measured final 1.2 2.1 3.1 3.7 3.9 4.0 4.0 4.2 4.2 4.7
equilibrium pH
Calculated 1.6 2.6 2.9 3.1 3.2 3.2 3.3 3.3 3.3 3.3
value of
Embodiment 14
Measured final 1.0 2.3 3.3 3.6 3.6 3.6 3.6 3.7 3.3 3.7
equilibrium pH
Calculated 1.6 2.5 2.8 3.0 3.1 3.2 3.2 3.2 3.2 3.2
value of
Embodiment 15
Measured final 1.4 2.5 3.3 3.4 3.4 3.4 3.4 3.4 3.4 3.4
equilibrium pH
Calculated 1.5 2.4 2.8 2.9 3.0 3.1 3.1 3.1 3.1 3.1
value of
Embodiment 16
Measured final 1.2 2.1 2.9 3.0 3.0 3.0 3.1 3.1 3.1 3.2
equilibrium pH
Calculated 1.5 2.3 2.6 2.7 2.8 2.9 2.9 2.9 2.9 2.9
value of
Embodiment 17
Measured final 1.3 2.0 2.7 2.8 2.8 2.8 2.8 2.8 2.8 2.9
equilibrium pH
Calculated 1.3 2.0 2.3 2.4 2.5 2.5 2.5 2.5 2.6 2.6
value of
Embodiment 18
Measured final 1.0 2.1 2.6 2.8 2.8 2.8 2.8 2.9 2.8 2.9
equilibrium pH
Calculated 1.1 1.7 1.9 2.0 2.0 2.0 2.0 2.1 2.1 2.1
value of
Embodiment 19
Measured final 1.0 2.1 2.2 2.2 2.2 2.2 2.2 2.4 2.2 2.2
equilibrium pH
It can be recognized from table 3 that the final equilibrium pH calculated in the method of evaluating the final equilibrium pH of the contaminated soil on site by using the paste pH according to the present invention is significantly approximate to the final equilibrium pH measured in the laboratory. Accordingly, the final equilibrium pH value can be simply obtained in real time on site.
Until now, the method of evaluating the final equilibrium pH of the contaminated soil on site by using the paste pH according to the embodiment of the present invention has been described in detail, it is obvious that various modifications may be made by those skilled in the art without departing from the scope of the present invention.
As described above, although various examples have been illustrated and described, the present disclosure is not limited to the above-mentioned examples and various modifications can be made by those skilled in the art without departing from the scope of the appended claims. In addition, these modified examples should not be appreciated separately from technical spirits or prospects.
Therefore, it should be understood that the present invention is not limited to the embodiments described above. The scope of the present invention will be limited by the appended claims. In addition, it will also be apparent to those skilled in the art that variations or modifications from the appended claims and the equivalent concept of the claims are included in the scope of the present invention.

Claims (3)

What is claimed is:
1. A method of evaluating a final equilibrium pH of a contaminated soil on site by using a paste pH, the method comprising:
measuring the paste pH by adding a solution to the contaminated soil to make it in a paste state; and
evaluating the final equilibrium pH according to an initial pH comprising a pH of a raindrop, underground water, or ore industry sewage by applying the paste pH to Equation 1,
Final ⁢ ⁢ equilibrium ⁢ ⁢ pH = ( paste ⁢ ⁢ pH + 1 ) × exp ⁡ ( - 1 initial ⁢ ⁢ pH ) - exp ⁡ ( - 1 ⁢ ( paste ⁢ ⁢ pH + 1 ) initital ⁢ ⁢ pH ) , Equation ⁢ ⁢ 1
in which the initial pH is a predetermined integer in a range of 4 to 10.
2. The method of claim 1, wherein the contaminated soil comprises at least one of a mineral tailing and a waste rock.
3. The method of claim 1, wherein the solution comprises distilled water, or water.
US14/181,312 2013-03-25 2014-02-14 Method of evaluating final equilibrium pH of contaminated soil on site by using paste pH Active 2035-11-12 US9678048B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2013-0031318 2013-03-25
KR1020130031318A KR101416192B1 (en) 2013-03-25 2013-03-25 On-site evaluation technique of final equilibrium ph of contaminated soil using paste ph

Publications (2)

Publication Number Publication Date
US20140288833A1 US20140288833A1 (en) 2014-09-25
US9678048B2 true US9678048B2 (en) 2017-06-13

Family

ID=51569742

Family Applications (1)

Application Number Title Priority Date Filing Date
US14/181,312 Active 2035-11-12 US9678048B2 (en) 2013-03-25 2014-02-14 Method of evaluating final equilibrium pH of contaminated soil on site by using paste pH

Country Status (2)

Country Link
US (1) US9678048B2 (en)
KR (1) KR101416192B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11666956B2 (en) * 2019-04-18 2023-06-06 Geosyntec Consultants, Inc. Method for mitigating acid rock drainage potential through the smoldering combustion of organic materials

Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2178550A (en) * 1929-05-02 1939-11-07 Solomon F Acree Method of determining ph and buffers and indicators therefor
US5172332A (en) * 1989-12-22 1992-12-15 American Sigma, Inc. Automatic fluid sampling and monitoring apparatus and method
JP2000055909A (en) 1998-08-07 2000-02-25 Horiba Ltd Soil constituent automatic analysis device
US6356830B1 (en) 1998-08-11 2002-03-12 Purdue Research Foundation System and method for automated measurement of soil pH
KR100571601B1 (en) 2003-07-10 2006-04-24 한남대학교 산학협력단 Biological method for cutoffing and purifying contaminated soil
US20060185411A1 (en) * 2005-02-22 2006-08-24 Tessenderlo Kerley, Inc. Calcium polysulfide, potassium polysulfide, calcium thiosulfate, and magnesium thiosulfate as urease inhibitors
US20070092407A1 (en) * 2005-10-26 2007-04-26 General Electric Company Optical sensor array system and method for parallel processing of chemical and biochemical information
US20080137069A1 (en) * 2004-12-16 2008-06-12 Kissel David E Systems and Methods for Predicting the Lime Requirement in Soils
US20080179253A1 (en) * 2003-12-24 2008-07-31 Malcolm William Clark Porous Particulate Material For Fluid Treatment, Cementitious Composition and Method of Manufacture Thereof
JP2009061420A (en) 2007-09-07 2009-03-26 Air Liquide Japan Ltd Manufacturing method of gas component and condensable component, and manufacturing system thereof
US20090311048A1 (en) * 2008-06-03 2009-12-17 Horst John F Mineral hardpan formation for stabilization of acid- and sulfate-generating tailings
US20100176061A1 (en) * 2007-02-14 2010-07-15 Monzyk Bruce F Water purification
US20110139695A1 (en) * 2007-05-04 2011-06-16 Solutions-Ies, Inc. In situ ph adjustment for solid and groundwater remediation
US20120053427A1 (en) * 2010-08-31 2012-03-01 Glumetrics, Inc. Optical sensor configuration and methods for monitoring glucose activity in interstitial fluid
KR20120080274A (en) 2011-01-07 2012-07-17 한국지질자원연구원 Method for selecting contaminated soil treating process
US20120228229A1 (en) * 2009-03-20 2012-09-13 Grant Brian Douglas Treatment or remediation of natural or waste water
US8834725B2 (en) * 2011-01-31 2014-09-16 Chevron U.S.A. Inc. Method for treating acid mine drainage
US20150196708A1 (en) * 2012-08-17 2015-07-16 The Regents Of The University Of California Systems, methods and compositions for improved treatment of acidosis

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0961420A (en) * 1995-08-30 1997-03-07 Hitachi Ltd Soil diagnosing pretreatment apparatus

Patent Citations (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2178550A (en) * 1929-05-02 1939-11-07 Solomon F Acree Method of determining ph and buffers and indicators therefor
US5172332A (en) * 1989-12-22 1992-12-15 American Sigma, Inc. Automatic fluid sampling and monitoring apparatus and method
JP2000055909A (en) 1998-08-07 2000-02-25 Horiba Ltd Soil constituent automatic analysis device
US6356830B1 (en) 1998-08-11 2002-03-12 Purdue Research Foundation System and method for automated measurement of soil pH
KR100571601B1 (en) 2003-07-10 2006-04-24 한남대학교 산학협력단 Biological method for cutoffing and purifying contaminated soil
US20080179253A1 (en) * 2003-12-24 2008-07-31 Malcolm William Clark Porous Particulate Material For Fluid Treatment, Cementitious Composition and Method of Manufacture Thereof
US20080137069A1 (en) * 2004-12-16 2008-06-12 Kissel David E Systems and Methods for Predicting the Lime Requirement in Soils
US7679058B2 (en) * 2004-12-16 2010-03-16 The University Of Georgia Research Foundation, Inc. Systems and method for predicting the lime requirement in soils
US20060185411A1 (en) * 2005-02-22 2006-08-24 Tessenderlo Kerley, Inc. Calcium polysulfide, potassium polysulfide, calcium thiosulfate, and magnesium thiosulfate as urease inhibitors
US20070092407A1 (en) * 2005-10-26 2007-04-26 General Electric Company Optical sensor array system and method for parallel processing of chemical and biochemical information
US20100176061A1 (en) * 2007-02-14 2010-07-15 Monzyk Bruce F Water purification
US20110139695A1 (en) * 2007-05-04 2011-06-16 Solutions-Ies, Inc. In situ ph adjustment for solid and groundwater remediation
JP2009061420A (en) 2007-09-07 2009-03-26 Air Liquide Japan Ltd Manufacturing method of gas component and condensable component, and manufacturing system thereof
US20090311048A1 (en) * 2008-06-03 2009-12-17 Horst John F Mineral hardpan formation for stabilization of acid- and sulfate-generating tailings
US20120228229A1 (en) * 2009-03-20 2012-09-13 Grant Brian Douglas Treatment or remediation of natural or waste water
US20120053427A1 (en) * 2010-08-31 2012-03-01 Glumetrics, Inc. Optical sensor configuration and methods for monitoring glucose activity in interstitial fluid
KR20120080274A (en) 2011-01-07 2012-07-17 한국지질자원연구원 Method for selecting contaminated soil treating process
US8834725B2 (en) * 2011-01-31 2014-09-16 Chevron U.S.A. Inc. Method for treating acid mine drainage
US20150196708A1 (en) * 2012-08-17 2015-07-16 The Regents Of The University Of California Systems, methods and compositions for improved treatment of acidosis

Also Published As

Publication number Publication date
KR101416192B1 (en) 2014-07-09
US20140288833A1 (en) 2014-09-25

Similar Documents

Publication Publication Date Title
Sungur et al. Characterization of heavy metal fractions in agricultural soils by sequential extraction procedure: the relationship between soil properties and heavy metal fractions
Farag et al. Concentrations of metals in water, sediment, biofilm, benthic macroinvertebrates, and fish in the Boulder River watershed, Montana, and the role of colloids in metal uptake
Abouian Jahromi et al. Heavy metal pollution and human health risk assessment for exposure to surface soil of mining area: a comprehensive study
Zornoza et al. The effect of former mining activities on contamination dynamics in sediments, surface water and vegetation in El Avenque stream, SE Spain
Obeng-Gyasi et al. Lead distribution in urban soil in a medium-sized city: household-scale analysis
Torfstein et al. Chemical characterization of atmospheric dust from a weekly time series in the north Red Sea between 2006 and 2010
Peralta et al. Heavy metal availability assessment using portable X-ray fluorescence and single extraction procedures on former vineyard polluted soils
Conesa et al. Metal extractability in acidic and neutral mine tailings from the Cartagena-La Unión Mining District (SE Spain)
Solà et al. Monitoring metal and metalloid bioaccumulation in Hydropsyche (Trichoptera, Hydropsychidae) to evaluate metal pollution in a mining river. Whole body versus tissue content
Thapalia et al. Zinc isotopic signatures in eight lake sediment cores from across the United States
Donner et al. Selenium in surface waters of the lower Athabasca River watershed: chemical speciation and implications for aquatic life
Manga et al. Environmental geochemistry of mine tailings soils in the artisanal gold mining district of Bétaré-Oya, Cameroon
Antunes et al. Potential risk assessment in stream sediments, soils and waters after remediation in an abandoned W> Sn mine (NE Portugal)
Udiba et al. Soil lead concentrations in Dareta village, Zamfara, Nigeria
Baldeck et al. A taxonomic comparison of local habitat niches of tropical trees
Mendes et al. Quantification of methylmercury and geochemistry of mercury in sediments from a contaminated area of Descoberto (MG), Brazil
González-Corrochano et al. Environmental geochemistry of a highly polluted area: the La Union Pb–Zn mine (Castilla-La Mancha region, Spain)
Festa et al. The comet assay for the detection of DNA damage in Mus spretus from Donana National Park
Souissi et al. Mobility of Pb, Zn and Cd in a soil developed on a carbonated bedrock in a semi-arid climate and contaminated by Pb–Zn tailing, Jebel Ressas (NE Tunisia)
Nascimento et al. Pollen storage by stingless bees as an environmental marker for metal contamination: spatial and temporal distribution of metal elements
Gębka et al. Watershed characteristics and climate factors effect on the temporal variability of mercury in the southern Baltic Sea rivers
Beriot et al. Intensive vegetable production under plastic mulch: A field study on soil plastic and pesticide residues and their effects on the soil microbiome
Couillard et al. Sources and chronology of fifteen elements in the sediments of lakes affected by metal deposition in a mining area
US9678048B2 (en) Method of evaluating final equilibrium pH of contaminated soil on site by using paste pH
Reutova et al. Long-term impact of the Tyrnyauz tungsten–molybdenum mining and processing factory waste on environmental pollution and children's population

Legal Events

Date Code Title Description
AS Assignment

Owner name: KOREA INSTITUTE OF GEOSCIENCE AND MINERAL RESOURCE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LEE, PYEONG-KOO;CHOI, JUNG-HAE;REEL/FRAME:032639/0516

Effective date: 20140110

STCF Information on status: patent grant

Free format text: PATENTED CASE

MAFP Maintenance fee payment

Free format text: PAYMENT OF MAINTENANCE FEE, 4TH YR, SMALL ENTITY (ORIGINAL EVENT CODE: M2551); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY

Year of fee payment: 4